Marissa Block LLC
NPI 1407453939 · Professional Counselor · Towson, MD
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marissa Block LLC is a Professional Counselor organization in Towson, MD (NPI 1407453939).
Provider details
- NPI number
- 1407453939
- Entity type
- Organization
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Marissa Block, Ceo/Founder(443) 300-6905
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Clinical Social Worker1041C0700X
Behavioral Health & Social Service Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Insight Therapy
- Doing business as
- Insight Therapy
Registry dates
- Enumerated
- 2020-10-07
- Last updated
- 2023-06-13
- Certified
- 2023-06-13
Frequently asked questions
- What is Marissa Block LLC's NPI number?
- Marissa Block LLC's National Provider Identifier (NPI) is 1407453939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Marissa Block LLC?
- Marissa Block LLC is classified in the NPPES registry as Professional Counselor (Behavioral Health & Social Service Providers).
- Where is Marissa Block LLC located?
- Marissa Block LLC's practice location on file with NPPES is 200 E Joppa Rd, Towson, MD 21286-3150.
- What is Marissa Block LLC's phone number?
- The practice phone number listed in the NPPES registry for Marissa Block LLC is (443) 300-6905.
- Does Marissa Block LLC accept Medicare?
- Marissa Block LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Marissa Block LLC?
- The authorized official listed on Marissa Block LLC's NPPES record is Marissa Block, Ceo/Founder. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Marissa Block LLC's NPI active?
- Yes — Marissa Block LLC's NPI (1407453939) is active in the NPPES registry as of the last update on 2023-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.